CN215338114U - Pipeline internal diameter measuring scale - Google Patents

Abstract

The utility model discloses a pipeline inner diameter measuring scale, and belongs to the technical field of measuring tools. Including main scale, movable grid and handheld handle, be equipped with first pulley and second pulley respectively in the main scale and handheld handle outside, through first pulley and second pulley, can freely slide at the pipeline inner wall, extension main scale to furthest back, through fastening screw locking main scale and movable grid, the distance between first pulley and the second pulley outside this moment is the internal diameter of pipeline promptly. The utility model has reasonable structural design, can measure the inner diameters of the pipe orifice part of the pipeline and any part inside the pipeline, and can freely move to the maximum size part in the pipeline in the measuring process, thereby accurately measuring the inner diameter of the pipeline. The use and operation are simple, the experience and skill level of an operator are not depended on, and the application prospect is good.

Description

Pipeline internal diameter measuring scale

Technical Field

The utility model belongs to the technical field of measuring tools, and relates to a pipeline inner diameter measuring scale.

Background

The component parameters of the vernier caliper for size measurement are required to be accurate, and the required data can be accurately and quickly measured, so that the method has very important significance for measurement. The outside diameter of a pipe can be accurately measured by a vernier caliper in the past, but the inside diameter of the pipe needs to be accurately measured partially, when the inside diameter is measured by the vernier caliper, the maximum value of the inside diameter of the pipe cannot be accurately found, or whether the measuring part of the vernier caliper is the inside diameter value of the pipe cannot be confirmed due to friction between a measuring claw of the vernier caliper and the inside diameter of the pipe, so that the inside diameter of the pipe is not accurately measured, and the inside diameter of any part in the middle of the pipe cannot be measured because the measuring claw of the vernier caliper can only measure the inside diameter of the pipe opening.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide a pipeline inner diameter measuring scale which can measure the inner diameters of a pipeline opening part and any part inside a pipeline, and can freely move to the maximum size part in the pipeline in the measuring process, so that the inner diameter of the pipeline at the position can be accurately measured.

The utility model is realized by the following technical scheme:

the utility model discloses a pipeline inner diameter measuring scale which comprises a main scale, a movable grid and a handheld handle, wherein the movable grid is connected with the handheld handle, the movable grid and the handheld handle are sleeved on the main scale in a sliding mode, a fastening screw is arranged on the movable grid, a first pulley is connected to the outer side of the main scale, a second pulley is connected to the outer side of the handheld handle, and the circle centers of the first pulley and the second pulley are located on the axis of the main scale.

Preferably, pipeline internal diameter measurement chi still includes the calibration chi, and the calibration chi is the C type, and two calibration planes of calibration chi are parallel, and two calibration planes are equipped with the wearing layer respectively.

Preferably, the hand-held handle is provided with anti-skid lines.

Preferably, the first pulley and the second pulley are provided with wear resistant layers.

Preferably, the first pulley and the second pulley are respectively connected with the main scale and the hand-held handle through bearings.

Preferably, the thickness of the first pulley and the second pulley is 5-10 mm.

Preferably, the main scale is a cylinder.

Preferably, the movable grid is provided with an electronic display screen, a power supply module, a function key, a processor and a capacitive grid sensor for detecting the displacement of the movable grid on the main scale; the electronic display screen, the power supply module, the functional keys and the capacitive grating sensor are respectively connected with the processor.

Further preferably, the power supply module is a button cell battery or a built-in rechargeable battery.

Further preferably, the electronic display screen is connected with a backlight device, and the backlight device is connected with the processor.

Compared with the prior art, the utility model has the following beneficial technical effects:

the utility model discloses a pipeline inner diameter measuring scale, wherein a first pulley and a second pulley are respectively arranged at the outer sides of a main scale and a handheld handle, the first pulley and the second pulley can freely slide on the inner wall of a pipeline, the main scale and a movable grid are locked by a fastening screw after the main scale is extended to the maximum extent, and the distance between the outermost sides of the first pulley and the second pulley is the inner diameter of the pipeline. The utility model has reasonable structural design, can measure the inner diameters of the pipe orifice part of the pipeline and any part inside the pipeline, and can freely move to the maximum size part in the pipeline in the measuring process, thereby accurately measuring the inner diameter of the pipeline. The use and operation are simple, the experience and skill level of an operator are not depended on, and the application prospect is good.

Furthermore, the matched calibration ruler can be quickly calibrated through two parallel calibration planes; be equipped with the wearing layer on two calibration planes, prevent that wearing and tearing from causing measuring error.

Furthermore, the anti-skid lines are arranged on the hand-held handle, so that friction force can be increased, and the operation is convenient.

Furthermore, the first pulley and the second pulley are provided with the wear-resistant layers, so that abrasion can be prevented, and the service life and the measurement precision are increased.

Furthermore, the first pulley and the second pulley are connected with the main scale and the handheld handle through bearings respectively, sliding is smooth, and meanwhile the service life can be prolonged.

Further, the thickness of first pulley and second pulley is 5 ~ 10mm for first pulley and second pulley have great contact point with the pipe wall, are convenient for adjust the detection cross-section coplane of first pulley and second pulley and pipeline, improve and detect the precision.

Further, the main scale is the cylinder, and when the main scale stretches out for a long time, can guarantee the rigidity of whole dipperstick, and the gripping of being convenient for.

Furthermore, the measuring scale adopts electronic digital display, so that the link of manual reading is omitted, and the measurement is more efficient and accurate.

Furthermore, the power module can adopt a button cell battery or a built-in rechargeable battery according to actual needs, so as to adapt to the needs of different occasions.

Furthermore, the electronic display screen is connected with a backlight device, so that a light source can be provided when light is insufficient, and measuring personnel can read the light source conveniently.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the working state of the pipe inside diameter measuring scale of the present invention.

In the figure, 1 is a calibration ruler, 2 is a main ruler, 3 is a movable grid, 4 is an electronic display screen, 5 is a fastening screw, 6 is a power module, 7 is a function key, 7-1 is an ON/OFF key, 7-2 is an initial key C key, 7-3 is a measurement OK key, 8 is a processor, 9 is a handheld handle, 10 is a first pulley, and 11 is a second pulley.

Detailed Description

The utility model is described in further detail below with reference to the following figures and examples:

referring to fig. 1, the pipe inner diameter measuring scale of the utility model comprises a main scale 2, a movable grid 3 and a hand-held handle 9, wherein the movable grid 3 is connected with the hand-held handle 9, the movable grid 3 and the hand-held handle 9 are slidably sleeved on the main scale 2, a fastening screw 5 is arranged on the movable grid 3, a first pulley 10 is connected with the outer side of the main scale 2, a second pulley 11 is connected with the outer side of the hand-held handle 9, and the circle centers of the first pulley 10 and the second pulley 11 are both positioned on the axis of the main scale 2.

In a preferred embodiment of the utility model, the pipe inner diameter measuring ruler is matched with a calibration ruler 1, the calibration ruler 1 is of a C shape, two calibration planes of the calibration ruler 1 are parallel, and the two calibration planes are respectively provided with a wear-resistant layer.

In a preferred embodiment of the utility model, the handle 9 is provided with anti-slip texture.

In a preferred embodiment of the utility model, the first pulley 10 and the second pulley 11 are made of a metallic material, on which a wear resistant layer is provided.

In a preferred embodiment of the utility model, the first pulley 10 and the second pulley 11 are connected to the main scale 2 and the handle grip 9, respectively, by bearings.

In a preferred embodiment of the present invention, the thickness of the first pulley 10 and the second pulley 11 is 5 to 10 mm.

In a preferred embodiment of the present invention, the main ruler 2 is a cylinder, and accordingly, the movable grid 3 and the handle 9 are shaped to match the main ruler 2, and have a shell structure with a through hole, and the main ruler 2 can be sleeved in the through hole. Preferably, a sliding groove can be arranged on the outer surface of the main ruler 2, and a sliding strip matched with the sliding groove is arranged on the inner walls of the movable fence 3 and the hand-held handle 9, so that relative rotation between the two can be avoided. In order to avoid relative rotation between the main ruler and the main ruler, the main ruler 2 can be directly made into a shape of a semi-cylinder, an elliptic cylinder, a prism and the like.

In a preferred embodiment of the utility model, the movable grid 3 is provided with an electronic display screen 4, a power module 6, a function key 7, a processor 8 and a capacitive grid sensor for detecting the displacement of the movable grid 3 on the main scale 2; the electronic display screen 4, the power module 6, the functional keys 7 and the capacitive grating sensor are respectively connected with the processor 8.

Preferably, the power module 6 is a button cell battery or a built-in rechargeable battery.

Preferably, a backlight is connected to the electronic display 4, the backlight being connected to the processor 8.

One arrangement of function keys 7 is shown in FIG. 1 and includes an ON/OFF key 7-1, an initial key C key 7-2 and a measurement OK key 7-3.

The processor 8 can adopt a singlechip AT89C51-24 PI.

The capacitive sensor may employ TM-003.

The principles and methods of use of the present invention are further illustrated in the following specific measurement examples:

step 1: as shown in fig. 1, pressing the ON/OFF key 7-1 to start the machine, placing the inside diameter measuring ruler between two calibration planes of the calibration ruler 1, wherein the internal distance of the calibration ruler 1 is 300mm, stretching the main ruler 2 and the movable grid 3 to ensure that the fixed pulley ON the handle and the fixed pulley ON the main ruler are tightly attached to the two ends of the calibration ruler, and pressing the initial key C, the initial distance between the first pulley 10 ON the handheld handle 9 and the second pulley 11 ON the main ruler 2 can be measured to be 300.00 mm;

step 2: referring to fig. 2, the pipe inner diameter measuring scale is placed in a pipe to be measured to measure the pipe inner diameter, firstly, the electronic display screen 4 is ensured to be perpendicular to the pipe axis, namely, the main scale 2 is perpendicular to the pipe axis, at the moment, the first pulley 10 and the second pulley 11 are coplanar with the detection section of the pipe, namely, the surface of the first pulley 10 and the surface of the second pulley 11 are ensured to be perpendicular to the pipe axis, then, the inner diameter measuring scale is held by one hand to hold the handle 9, the main scale 2 is stretched by one hand, the first pulley 10 and the second pulley 11 freely slide on the inner wall of the pipe until the main scale 2 cannot extend, the distance between the first pulley 10 and the second pulley 11 is the measured pipe inner diameter, the main scale 2 and the movable grid 3 are fastened through the fastening screw 5, then the OK key 7-3 is pressed, at the moment, 450.67mm is displayed on the electronic display screen 4, and the pipe inner diameter is 450.67 mm.

It should be noted that the above description is only one embodiment of the present invention, and all equivalent changes of the system described in the present invention are included in the protection scope of the present invention. Persons skilled in the art to which this invention pertains may substitute similar alternatives for the specific embodiments described, all without departing from the scope of the utility model as defined by the claims.

Claims (10)

1. The utility model provides a pipeline internal diameter measurement chi, including main scale (2), move bars (3) and handheld handle (9) and be connected, move bars (3) and handheld handle (9) slip cover and establish on main scale (2), be equipped with fastening screw (5) on moving bars (3), a serial communication port, the outside of main scale (2) is connected with first pulley (10), the outside of handheld handle (9) is connected with second pulley (11), the centre of a circle of first pulley (10) and second pulley (11) all is located the axis of main scale (2).

2. The pipe inside diameter measuring ruler of claim 1, wherein the pipe inside diameter measuring ruler further comprises a calibration ruler (1), the calibration ruler (1) is C-shaped, two calibration planes of the calibration ruler (1) are parallel, and the two calibration planes are respectively provided with a wear-resistant layer.

3. The pipe inside diameter measuring ruler of claim 1, wherein the handle (9) is provided with anti-skid lines.

4. The pipe inside diameter measuring ruler of claim 1, wherein the first pulley (10) and the second pulley (11) are provided with wear resistant layers.

5. The pipe inside diameter measuring ruler of claim 1, wherein the first pulley (10) and the second pulley (11) are connected with the main ruler (2) and the hand-held handle (9) through bearings respectively.

6. The pipe inside diameter measuring ruler of claim 1, wherein the thickness of the first pulley (10) and the second pulley (11) is 5-10 mm.

7. The pipe inside diameter measuring ruler of claim 1, wherein the main ruler (2) is a cylinder.

8. The pipeline internal diameter measuring scale according to claim 1, wherein the movable grid (3) is provided with an electronic display screen (4), a power module (6), a function key (7), a processor (8) and a capacitive grid sensor for detecting the displacement of the movable grid (3) on the main scale (2); the electronic display screen (4), the power module (6), the functional keys (7) and the capacitive grating sensor are respectively connected with the processor (8).

9. The pipe inside diameter measuring ruler of claim 8, wherein the power module (6) is a button cell or a built-in rechargeable battery.

10. The pipe inside diameter measuring ruler of claim 8, wherein the electronic display screen (4) is connected with a backlight device, and the backlight device is connected with the processor (8).

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